Miss Trunchbull's Chocolate Cake

Miss Trunchbull’s Chocolate Cake—A Treat Worth the Challenge!

Roald Dahl has a special kind of magic, doesn’t he? Matilda has been one of my favorite books for as long as I can remember. It’s a story of cleverness, courage, and standing up to bullies—wrapped in humor and just the right amount of mischief. And, of course, it gave us one of the most unforgettable chocolate cakes in literary (and cinematic!) history.

If you’ve seen the movie, you know exactly what I’m talking about. Poor Bruce Bogtrotter—accused of sneaking a slice of Miss Trunchbull’s prized chocolate cake, he’s sentenced to eat an impossibly massive version of it in front of the entire school. It’s a tense moment, but also one of the best acts of rebellion. Because Bruce? Bruce eats every last bite. And in doing so, he proves that sometimes, the best way to defeat a bully is with pure, delicious determination.

As a kid, I watched that scene over and over with my sister, both of us cheering Bruce on. And let’s be honest—part of me always wanted a slice of that cake. (Well, maybe not that size of a slice.) So, after all these years, I finally decided to bring Miss Trunchbull’s infamous cake to life. And let me tell you . . . she wasn’t lying. It truly is “the most scrumptious cake in the entire world.”

Decadent, rich, and absolutely indulgent—this chocolate cake is the stuff of dreams. And while you won’t have to eat an entire mountain of it in one sitting (unless you want to), I promise one slice definitely won’t be enough.

Ready to bake up a little bookish magic? Grab your apron, your love for Matilda, and let’s make a cake worthy of a champion!

Miss Truncuhbull's Chocolate Cake

Difficulty: Average

Yields: 10–12 slices

Prep time: 1 hour

Baking & Finishing time: ~2 hours

Ingredients

For the Cake

2 cups sugar

1 ¾ cups all-purpose flour

¾ cup dark cocoa powder

2 teaspoons baking soda

1 teaspoon baking powder

1 teaspoon salt

2 eggs

1 cup buttermilk

2 teaspoon espresso powder in 1 cup hot water

or 1 cup dark hot coffee

½ cup vegetable oil

1 teaspoon vanilla extract

For Dark Chocolate Ganache

2 cups heavy cream

16 ounces dark chocolate chips

For the Chocolate Frosting

6 ounces good semisweet chocolate

½ pound (2 sticks) unsalted butter,

at room temperature

1 large egg yolk, at room temperature

1 teaspoon pure vanilla extract

1 ¼ cups sifted confectioners' sugar

1 tablespoon instant coffee powder

Directions

1. For the Cake: Preheat the oven to 350 degrees F. Butter two 8-inch x 2-inch round cake pans. Line with parchment paper, then butter and flour the pans.

2. Sift the flour, sugar, cocoa, baking soda, baking powder, and salt into the bowl of an electric mixer fitted with a paddle attachment and mix on low speed until combined. In another bowl, combine the buttermilk, oil, eggs, and vanilla. With the mixer on low speed, slowly add the wet ingredients to the dry. With mixer still on low, add the coffee and stir just to combine, scraping the bottom of the bowl with a rubber spatula.

3. Pour the batter into the prepared pans and bake for 30–35 minutes, until a cake tester comes out clean. Cool in the pans for 30 minutes, then turn them out onto a cooling rack and cool completely. Remove from pans and cool on wire rack.

4. For the Ganache: Heat cream in microwave safe bowl for 3 minutes. Pour hot cream over bowl of chocolate chips. Let sit for 2 minutes.

5. Stir until completely combined. Let cool for 10 minutes.

6. For the Chocolate Frosting: Chop the chocolate and place it in a heat-proof bowl set over a pan of simmering water. Stir until just melted and set aside until cooled to room temperature.

7. In the bowl of an electric mixer fitted with a paddle attachment, beat the butter on medium-high speed until light yellow and fluffy, about 3 minutes.

8. Add the egg yolk and vanilla and continue beating for 3 minutes. Turn the mixer to low, gradually add the confectioners' sugar, then beat at medium speed, scraping down the bowl as necessary, until smooth and creamy.

9. Dissolve the coffee powder in 2 teaspoons of the hottest tap water. On low speed, add the chocolate and coffee to the butter mixture and mix until blended. Don't whip!

10. Create a "dam" or line of frosting around the inside of the bottom cake round. Fill the center with the ganache. Place on top cake round, and cover the top and sides of cake with frosting. Best eaten immediately.